Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A bizarre house filled with an astounding array of collections.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

The hallucinogenic center of the ancient world.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

This crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

The ancient latrines of the Greeks, in all their public glory.

Go inside to really appreciate this 500-year-old technological masterpiece.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

Millions of numbers carved in glass represent the tattoos forced upon victims.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The site of Paul Revere's historic two lantern warning.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Try not to get slimed in Tribeca.

The prototype for all Nazi concentration camps.